Security:This update exposes hardware support for branch target injection mitigation to VMware guests. This hardware is used by some guest operating systems to mitigate CVE-2018-5715 (also called by the name "Spectre").For a guest operating system to use hardware support for branch target injection mitigation, the following steps must be taken:Install this update of VMware Workstation Player.Ensure that your VM is using Hardware Version 9 or higher. For best performance, Hardware Version 11 or higher is recommended.Update your guest operating system with fixes for CVE-2018-5715 (consult the operating system vendor for these updates).Update the host firmware (or CPU microcode, if host firmware cannot be updated).